Malicious PDF — malware analysis report

Static analysis result for SHA-256 8bacb20465aff058…

MALICIOUS

PDF

41.8 KB Created: 2021-05-13 21:40:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 546ab676200e06c92ca4e97036986a7e SHA-1: 59ff75f5d708cf4f330324743360d44c96d3ea22 SHA-256: 8bacb20465aff0581aeae2be154c3614fc8f626ba2b783eaa716707a528be9ff
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links that redirect to malicious infrastructure, specifically advertising 'game hacks' and 'generators'. The primary malicious URL identified is https://netcdn.xyz/app/431946152/abd-roblox-game-hack. The document body and heuristics indicate a lure for users to click these links, likely leading to further malware or phishing attempts. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/abd-roblox-game-hack In PDF document text
    • http://oceanos.pl/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-free-bonus_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/free-gold-cards-coin-master_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/show-me-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-free-spain_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-hack-no-survey_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-pro-hack_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • http://oceanos.pl/images/toolbox-apk_GM479516143.pdfIn PDF document text
    • http://oceanos.pl/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47DE 25920 bytes
SHA-256: db9899b5474b03770ea8bb122afd23bf29ab9fca01d896e3f934816b7e50f5a1
font_01_sfnt_off000081cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81CB 17956 bytes
SHA-256: 266e792ce976f8626ed007ec04c0996643121c68cc62e4bbc449b2a6af2c4ac3

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